What effect does the sympathetic nervous system have on micturition?
A) Sympathetic activity excites muscles of the internal urethral sphincter allowing micturition.
B) Sympathetic activity excites muscles of the internal urethral sphincter inhibiting micturition.
C) Sympathetic activity inhibits muscles of the internal urethral sphincter inhibiting micturition.
D) Sympathetic activity excites muscles of the external urethral sphincter allowing micturition.
E) Sympathetic activity inhibits muscles of the external urethral sphincter inhibiting micturition.

Question

Quizplus · Accepted Answer

Sympathetic activity excites the muscles of the internal urethral sphincter, which helps to keep the sphincter closed, thereby inhibiting micturition. This is part of the body's mechanism to retain urine until it is appropriate to void.

What Effect Does the Sympathetic Nervous System Have on Micturition